-2 points SerCP10 16 P 013 My Notes Ask Your Teacher Consider the following figu

Question

-2 points SerCP10 16 P 013 My Notes Ask Your Teacher Consider the following figure. 8.00 AC 2.00 C 4.00 C (a) Find the electric potential, taking zero at infinity, at the upper right corner (the corner without a charge) of the rectangle in the figure. (Let x 5.60 cm and y 3.50 cm.) (b) Repeat if the 2.00-Ac charge is replaced with a charge of -2.00 uC. Need Help? Read It My Notes o Ask Your Teacher 4. -3 points SerCP 10 16 P.015.MI FB Two point charges 21 +4.70 nc and Q2 1.80 nc are separated by 45.0 cm. (a) What is the electric potential at a point midway between the charges? (b) What is the potential energy of the pair of charges? What is the significance of the algebraic sign of your answer? Positive work must be done to separate the charges. O Negative work must be done to separate the charges. Need Help? Read It Master

Explanation / Answer

Here ,

as the electric potential due to a point charge is given as

V = k * q/d

a)

electric potential = V1 + V2 + V3

electric potential = 9*10^9 * 10^-6 *(8/.056 + 4/.035 + 2/sqrt(0.035^2 + 0.056^2))

solving

electric potential = 2.59 *10^6 V

the electric potential at top right corner is 2.59 *10^6 V

b)

if the charge 2 uC is replaced by -2 uC

electric potential = V1 + V2 + V3

electric potential = 9*10^9 * 10^-6 *(8/.056 + 4/.035 - 2/sqrt(0.035^2 + 0.056^2))

solving

electric potential = 2.041 *10^6 V

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